.main-box {
  margin-bottom: .6rem;
  overflow-y: scroll;
  position: absolute;
  width: 100%;
  left: 0;
  height: 100%;
  top: 0;
  .cwj-main-body {
    position: absolute;
    top: .45rem;
    height: 100%;
    width: 100%;
    left: 0;

  }
}

.example {
  text-align: center;
  border-radius: 4px;
  width: 100%;
  height: 100%;
  position: absolute;
  line-height: 44;
}